AUDI S4 B6 B7 4.2L V8 CATLESS DOWNPIPES
XS-POWER catless downpipe system for compatible Audi S4 B6 and B7 4.2L V8 Quattro models equipped with the 6-speed manual transmission. Designed to replace the restrictive factory catalytic-converter downpipe sections with a freer-flowing exhaust configuration.
| B6 / B7 AUDI S4 CHASSIS |
4.2L V8 ENGINE APPLICATION |
6-SPEED MANUAL TRANSMISSION |
CATLESS DOWNPIPE DESIGN |
AUDI S4 B6 B7 4.2L V8 CATLESS DOWNPIPE SYSTEM
The XS-POWER Audi S4 4.2L V8 Catless Downpipes are designed for compatible B6 and B7 S4 Quattro models equipped with the 6-speed manual transmission.
The factory Audi S4 4.2L exhaust system uses catalytic-converter sections in the exhaust path. This XS-POWER system replaces the applicable factory downpipe and catalytic-converter sections with a catless, freer-flowing exhaust configuration.
Removing the applicable catalytic-converter restriction provides a less restrictive exhaust path compared with the original catalytic converter configuration. This makes the downpipes particularly relevant to performance-oriented B6/B7 S4 builds where exhaust flow is a priority.
These downpipes are intended for the specific Audi S4 configuration stated in this listing. Transmission type and vehicle configuration should be confirmed before ordering.
HIGH-FLOW CATLESS EXHAUST CONFIGURATION
The downpipe section is an important part of the Audi 4.2L V8 exhaust path. Factory catalytic-converter sections introduce additional restriction compared with an unrestricted exhaust pipe.
This XS-POWER catless configuration removes the applicable factory catalytic-converter sections from the downpipe assembly, creating a more direct exhaust path.
- Catless downpipe configuration
- Designed to reduce restriction compared with the applicable factory catalytic-converter sections
- Increased exhaust-flow capability compared with the corresponding catted configuration
- Performance-oriented exhaust upgrade
- Designed for compatible Audi S4 B6/B7 4.2L V8 applications
- Designed for compatible 6-speed manual transmission vehicles
Actual vehicle performance depends on the complete exhaust system, engine condition, ECU calibration and other vehicle modifications. No specific horsepower or torque increase is guaranteed.
AUDI S4 FITMENT
| Make | Audi |
| Model | S4 |
| Chassis | B6 / B7 |
| B6 Application | 2004-2005 Audi S4 4.2L V8 |
| B7 Application | 2005.5-2008 Audi S4 4.2L V8 |
| Engine | 4.2L V8 |
| Drivetrain | Quattro |
| Transmission | 6-Speed Manual |
PRODUCT FEATURES
Replaces the applicable factory catalytic-converter downpipe sections with a performance-oriented catless exhaust path.
Designed around compatible B6 and B7 generation Audi S4 4.2L V8 Quattro applications.
This version is identified for compatible vehicles equipped with the 6-speed manual transmission.
Eliminates the applicable catalytic-converter restriction from the downpipe exhaust path.
Intended for performance-oriented Audi S4 builds where a catless downpipe configuration is appropriate and legally permitted.
See the XS-POWER catless downpipes for the Audi S4 B7 in our product video.
WATCH AUDI S4 CATLESS DOWNPIPE VIDEO ON YOUTUBEINSTALLATION INFORMATION
Installation involves removal of the applicable factory downpipe/catalytic-converter assemblies and installation of the XS-POWER catless downpipes.
- Professional installation is recommended.
- Inspect all exhaust connections and surrounding clearances during installation.
- Check exhaust alignment before final tightening.
- Inspect for exhaust leaks after installation.
- ECU calibration requirements depend on the vehicle and configuration.
Because this product removes catalytic converters, diagnostic trouble codes or a Check Engine Light may occur depending on the vehicle's ECU calibration and catalyst-monitoring strategy.
EMISSIONS AND ROAD-USE NOTICE
This product is a catless performance exhaust component that removes applicable catalytic-converter sections.
It may not be legal for use on pollution-controlled public-road vehicles in your jurisdiction. The purchaser is responsible for determining applicable emissions, inspection and road-use requirements before installation or use.
AUDI S4 B6 B7 DOWNPIPE FAQ
What Audi models are these downpipes designed for?
They are identified for compatible Audi S4 B6 and B7 models equipped with the 4.2L V8, Quattro drivetrain and 6-speed manual transmission.
Are these downpipes catless?
Yes. This is a catless downpipe configuration that replaces the applicable factory catalytic-converter sections.
Do these fit the Audi S4 B6 4.2 V8?
They are listed for compatible 2004-2005 B6 S4 4.2L V8 6-speed manual applications.
Do these fit the Audi S4 B7 4.2 V8?
They are listed for compatible 2005.5-2008 B7 S4 4.2L V8 6-speed manual applications.
Do these fit automatic or Tiptronic vehicles?
This listing is specifically identified for the 6-speed manual transmission. Do not assume automatic-transmission compatibility.
Will catless downpipes increase exhaust flow?
Removing the applicable catalytic-converter restriction creates a less restrictive exhaust path compared with the corresponding factory catted section.
How much horsepower will these downpipes add?
No fixed horsepower increase is guaranteed. Results depend on vehicle condition, ECU calibration, the complete exhaust system and other modifications.
Can catless downpipes cause a Check Engine Light?
Yes. Removing catalytic converters can affect catalyst-monitoring readings and may produce diagnostic trouble codes or a Check Engine Light depending on vehicle configuration and ECU calibration.
Is professional installation recommended?
Yes. Professional installation is recommended for proper alignment, clearance, fastening and exhaust-leak inspection.
XS-POWER PERFORMANCE PARTS AND EXHAUST SYSTEMS
Browse additional XS-POWER turbocharger, exhaust, downpipe, manifold, intercooler and performance components:
AUDI S4 B6 B7 4.2 V8 PERFORMANCE DOWNPIPES
This XS-POWER exhaust system is intended for customers searching for Audi S4 B6 catless downpipes, Audi S4 B7 catless downpipes, Audi 4.2 V8 downpipes, B6 S4 performance exhaust, B7 S4 performance exhaust, Audi S4 decat pipes, Audi S4 test pipes, Audi S4 high-flow downpipes and 4.2L V8 exhaust upgrades.
International Audi enthusiasts may also search for these components as decat downpipes, catalyst-delete pipes, cat-delete downpipes, front exhaust pipes, performance downpipes or sports exhaust pipes. Terminology varies by market.
XS-POWER supplies performance parts for customers in the United States and supported international destinations, including Audi performance enthusiasts throughout Europe, the United Kingdom, Canada, Australia, New Zealand and other supported markets.
Verify chassis generation, engine, drivetrain, transmission and local emissions requirements before ordering.
Performance exhaust systems, downpipes, turbochargers, turbo manifolds, headers, intercooler piping and fabrication components for import, European and domestic performance applications.
